About half of all elementary schools would operate from 7:30 a.m. to 3 p.m.

About half of all elementary schools would operate from 8:30 a.m. to 4 p.m.

All middle schools would operate from 7:45 a.m. to 3:15 p.m.

All high schools would operate from 8:45 a.m. to 4:15 p.m.

“Starting high school classes later in the day is supported by scientific research that shows teens learn better when they’re able to sleep later in the morning,” Spencer said in the statement.District officials will hold community meetings during the upcoming weeks, Spencer said. “And principals will be asked to meet with their communities to gather even more input.”HISD administrators plan to make a formal proposal to the school board by May 17.